Nokia E72 Nokia E72 User Guide in US English / Spanish - Page 12

Find help USIM card, contact the operator whose USIM card is in your • If the signal strength of the cellular network varies device. much in your area, your device must scan for the available network repeatedly. This increases the Prolong battery life demand on battery power. Many features in your device increase the demand on battery power and reduce the battery life time. To save battery power, observe the following: If the network mode is set to dual mode in the network settings, the device searches for the 3G network. You can set the device to use only the GSM network. To use • Features that use Bluetooth technology, or allowing such features to run in the background while using other features, increase the demand on battery only the GSM network, select Menu > Ctrl. panel > Settings and Phone > Network > Network mode > GSM. power. Switch off Bluetooth when you do not need it. • The backlight of the display increases the demand on • Features that use wireless LAN (WLAN), or allowing such features to run in the background while using other features, increase the demand on battery power. The WLAN on your Nokia device switches off when you are not trying to connect, not connected to another access point, or not scanning for available networks. To further reduce battery consumption, you can specify that your device not scan, or scans less battery power. In the display settings, you can change the length of the time-out period after which the backlight is switched off. Select Menu > Ctrl. panel > Settings and General > Personalization > Display > Light time-out. To adjust the light sensor that observes lighting conditions and adjusts the display brightness, in the display settings, select Light sensor. often, for available networks in the background. • Leaving applications running in the background • If you have set Packet data connection to When available in connection settings, and there is no packet data coverage (GPRS), the device periodically tries to establish a GPRS connection. To prolong the increases the demand on battery power. To close the applications you are not using, press and hold the menu key, scroll to the application, and press the backspace key. operating time of your device, select Menu > Ctrl. • To save power, activate the power save mode. Press panel > Settings and Connection > Packet data > the power key, and select Activate power saving. To Packet data connection > When needed. deactivate it, press the power key, and select • The Maps application downloads new map information when you scroll to new areas on the map, which increases the demand on battery power. You Deactivate power saving. You may not be able to change the settings of certain applications when the power save mode is activated. can prevent the automatic download of new maps. 12